Rocker shaft bearing for looms



Aug. 4, 1936. w. R. STONE ROG KER SI 'IAFT BEARING FOR LOOMS Filed Nov. 217,; 1954 WRLTEQ R. STONE Patented Aug. 4, 1936 PATENT OFFICE [12 Claims. (01. soc-410' 'Thisinvention relates" to a; bearing "for the rocker'shaft for 'lo'oms'and more especially to a'bearing which can be adjusted without disrupting any. of the parts of the loom and without the necessity of dismantling any portion of I the loom to take bearing. v i a Inca loom, the rocker shaft penetrates the frame of the loom and has a bearing on each end'thereof; Immediately inside the loom frame the sword is usually secured to the rocker shaft and immediately outside the loom frame the foot for'xthe shoe of the 'picker stick" is usually secured, leaving no additional room for the insertion of additional bearings and the like. I have provided anew type of bearing which takes up no more space than the conventional bearing and-'loom-"fra'fne and which can be adjusted very easily without the necessity of dismantling any portion of the loom.

It is therefore an object of this invention to provide a bearing for rocker shafts of looms which can be adjusted to compensate for wear without the necessity of dismantling any portion of the loom.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds when taken in connection with the accompanying drawing, in which:-

Figure 1 is an isometric view of the lower portion of a loom frame showing my invention applied thereto;

Figure 2 is a sectional view taken along the line 2-2 in Figure 1 and immediately outside the loom frame;

Figure 3 is a transverse sectional View taken along line 3-3 in Figure 2;

Figure 4 is an inverted isometric view of the portion of the bearing appearing on the outside of the loom frame;

Figure 5 is an isometric view of the portion of the bearing which is secured on the inside :up wear in the rocker shaft of the loom frame to cooperate with the portion of the bearing shown in Figure 4.

In the drawing, the numeral l0 indicates the portion of the loom frame in which the rocker shaft is mounted. This loom frame usually has a bearing secured on the outside thereof which projects through a suitable hole in the loom frame and in which the rocker shaft l2 of the loom is usually mounted. This bearing is similar to the bearing in Figure 4 except that it does not have any cutaway portion, but is a plain member secured to the exterior of the loom with a barrel portion forming a bearing for the rocker shaft. This soon becomes worn and in order to replace it with a new bearing, iti'snecessaryto remove the foot from the end of the rocker shaft and insert a new bearing, which is costly. 5

By my improved structure, the bearing can be adjusted from time to time, to take up a-small amount of Wear and therefore the bearing will not become badly worn and thus turn out an inferior" product before the new bearing is installed, therefore, adjustments can be made'from week toweek to keepthe loom in first class condition to compensate for wear asit occurs. My invention therefore, contemplates a bearing comprising-the portion I3 having holes l4- and 15 therein, and a semi-circular bearing portion; 16-, the portion l3 being cut away as" at I1. This is placed on the outside of'the loom frame by means of suitable bolts l8 and I9 penetrating the holes [4 and I5 and also penetrating holes in the loom frame. The member l3 also has pins 20 and 2| which fit into holes in the loom frame to better secure the same in position. The member l3 and associated parts are placed on the loom in an inverted position from that shown in Figure 4, and therefore the bottom portion of the bearing I6 is open. I then place a member 23 on the inside of the loom with the rocker shaft l2 inserted through an opening 24, said member 23 having slots 25 and 26 which are penetrated by bolts [8 and I9 and suitable nuts 21 and 28 are placed on said bolts, therefore, the parts [3 and 23 are firmly secured to the loom frame I 0. This member 23 has a portion 29 which has an arcuate face 30 on which the rocker shaft I2 is adapted to rest. The upper end of member 23 has a lip 3! having a threaded hole 32 therein in which a set screw 33 is secured. It is seen that by loosening the bolts l8 and I9 and tightening up on the set screw 33, the amount of wear between the rocker shaft l2 and the bearing portions l6 and 29 can be taken up to a snug fit. When the bolts l8 and I9 are loosened during this tightening operation, the bearing cannot be tightened to a greater extent than is necessary to compensate for wear since bearing I3 is held stationary by means of pins 20 and 2|.

The sword 34 is usually secured on the rocker shaft l2 immediately inside the inner surface of member 23.

Bearing portion I 6 also has an oil hole 35 therein to facilitate lubrication in addition to oil hole 36, which is also therein. The conventional foot 31 is secured outside the loom frame on the rocker shaft, and thus it is seen that I have provided a bearing which occupies no more space than former bearings and which can be easily adjusted to compensate for wearing.

The foot 31 has an outwardly extending foot portion on which conventional shoe 43 is adapted to have rocking movement. A picker stick 42 has its lower end secured in said foot. Aconventional spring housing is disposed on the lower side of the extension of foot 39 and a strap 4| has one end secured to said housing and its other end is secured to picker stick 42. Parts 31, 40, 4|, 42 and 43 are conventional.

In the drawing and specification there has been set forth a preferred embodiment'of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and-not for purposes of limitation, the scope of the invention being set 1 forth in the appended claims.

I'claim: r

1. A bearingfor rocker shafts'for looms comprising in combination, a loom frame member having an opening therein, a bearing member secured to the outer surface of the frame of the loom and having anarcuate bearing portion projecting into said opening and encirclingthe upper portion of the rocker shaft, a second bearing member secured to the inner surface of the frame of the loom and having an arcuate bearing portion projecting into said opening and engaging the lower surface of the rocker shaft immediately below the arcuate portion on said first bearing member, a centrally disposed lip on the upper end of the second bearingmember projecting laterally over the'upper edge 'of the lo'om frame member, a set screw threada'bly mounted in said lip' and having its lower end in engagement with the loom frame both of posed against the inner surface of the loom' frame and having an opening therein much ;larger than the shaft and through which the shaft is adapted to pass, a pair of vertically disposed slots in said plate, bolts mounted in said slots and penetrating the loom frame for securing the plate to the loom frame, a laterally projecting lip on the upper portion of the plate adaptedto extend over the upper edge of the frame, a set screw mounted in said lip and having itslower endadapted' to engage. the m frame for adjusting said plate. vertically with relation to the frame, and arcuate bearingportion projecting from said plate through the'opening in the frame and; serving to support the shaft for rotation, a second plate having'a pair of holes therein and disposed on the outside of the frame and having said'bolts penetrating the holes therein, said second plate having an'extension projecting into the opening. in said frame and above said shaft, said extension having an arcuate bearing surface on'its lowersid'e for engaging said shaft, said second plate being cut away centrally thereof'to permit the second plate to be secured in position with-relation: to said shaft without passing the same overthe'encl' of the shaft.

WALTER R. STONE; 

